Punching, feeding, and channeling mechanism for sewing-machines.



H. P. SCHOENKY. PUNCHINGJEEDING, AND CHANNELING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED OCT. 23. I516 1,242,607. Patented Oct. 9, 1917.

3 SHEETSSHEET I.

4/ a? L I 4 3? I #I I EIIIIIIII I. III I IMII IIHIII T IIIIIIIII W q l I l 4 I I I I i I I I III? H. P. SCHOENKY.

PUNCHING, FEEDING, AND CHANNELING MECHANISM FOR SEW'NG MACHINES.

APPLICATION FILED OCT. 23. '9'6.

1,242,607. Patented Oct. 9. 1917.

3 SHEETSSHEET 2.

Patented Oct. 9,1917.

3 SHEETS-SHEET 3.

H. P. SCHOENKY.

APPLICATION HLED OCT. 23. 1916.

PUNCHING, FEEDING, AND CHANNELING MECHANISM FOR SEWING MACHINES.

UNITED STATES PATENT ()FFICE.

HENRY P..- seHoENKY, on sir. Levis, MIssoURI, essxenda To AMERIGAN snot: MACHINERY &. Toot COMPANY, or s'r. LOUIS, MISSDUEL, A: eonromwmi GI?- MIS OURI.

Specifletionof Letters Patent.

Patented Oct. 9, 1917..

Applicationifiled October 23, 1916. Serial No; 12?;045.

To all whom z'ztmwy concern:

Be: it known that I, HENRY P. 5011015 12131, a. citizen of the United States, ands. resir dent of the: city of St. Louis endState of Missouri, have invented it. new and? useful Improvement in Punching, Feeding,- and Channeling Mechanism for Sewing-Ma:- chines oii which the following is a specification.

This invention relates to shoe sewing mnchines of the look-stitch type, and ise divisionnl part of the invention shown and described in my original application for United States Patent for we): three-d sewing machines, Serial No. 713179, filed Jonuary 10; 1916.

The obj ects of the invention are simplicity of construction, strength and dunability; to gether with ease of operation and adjustment for all classes of wonk, such asto make a practical stitching machine for use by ordinwry shoe workers without the attention ofslcilled operators or machinists. Further objects of the invention appear hereinafter.

The invention consists in the arrangement of an aw-Lholder and a channelcutterina vertically and horizontally movable slide for punching, feeding and channeling the work. The invention further consists in the arrangement of the parts for convenient operation of the machine, and foo easy inspection and: adjustment onreps-in, as hereinaften described What the invention con sists in is furtheoset forth in: thenppended claims.

The accompanying drawings Show? a portion of at shoe sewingmaiehihei mbodying the invention onliv the work table, aaw-l' channel holder, and parts cofiperetingtherewith for pnnehing, feeding and channel the won-k being shown, reerenoe being to my earlier application, refereed to above, tor drawings and description oi the complete-machine. The reference numerals used in the accompenymgzdnewings are the swine as those: used in the drewingsr coernpain ying said earlier applications and his the some pants in? all the views; Re arming to theorems Y c Eiguee ill-is steel-1t ele -etwn of the Bower g lftion cit-- atmaehineemhedinmg my inv n- E183 2n a wh n erosssnetiemi e on same on: the line 2 2 in Fig. 1, looking down;

Fig 3 is a side view of the right hand side of the portion of the machine shown in Fig; 1;

Fig. 4 is a vertical section of the same: on the line 4-4 in Fig. 1, looking in the direction of the arrows;

Fig. 5 is :1. vertical section of the same on the line 55 in 1 1,2. 4. looking in the direc tion of the arrows; and

Figs. 6, 7., 8 and 9 are detail views of the adjustable holder for the t1Wl and channel entten.

Themaehinehes a main frame consisting oi at base 10, sidewaillsl'l a front wall 12. Projecting forward from, the front-Weill is a table, 13 for supporting-the Wonk being sewed. The Worktable has a slot 19 through it-pamallel to its front edge for the'awl and needle to work through. The work is held by the operator with its top side up, and! is guided by hand. The work is fed forward for each stitch by th e awl 20, which operates from. below the work tablie, in front of the shuttle; The and is eam-ied by, at vertieallw and sidevvise IHOVftblG llOldGI 2-1., which also carries a channel cutter 22 for grooving the undersideiof the work to form a channel for the thread. The-Wonk isheldin plnce onythe table by a: pliesseri iioot 32. which operates from above thetable. The presserfoot 32 and needle 41 are mOUILtfQd' -abQYQ thflj'fllblb in suitable support/s not shown in the drawinge., The. teblevhas a recess below itiif n the shuttle 52 and bobbin holder- 53:v which ail-e operatediin, suitablemannen I The awl, channel cutter, and; eed ng mechanism we opeliasted rom. a netetfi g cam disk 80 mounted onthe shaft 81!, which isiounnaled' in bearings 82;it1- the side waits; and whiohis rotated; by. any suitable me e; The needle and: aiwlz ere both showed-1min t, but the invention is not nesteiictedi to! a straight; needle and tra g t n he HAW/1 20 and; channel; cutter 22: are ailiaustahlii an? mired to the-evil holder 9E1 by meanest a clamp'. bolt which has a; peir'cni entipe'll h 13% th-rongtnlt'r unden-itshqedt. channel mitten-1s shorter hft Q' n! base ehisel edge. The el'amm *bniggees th ug tmns ense h ltL2 Be o W emi ctr-fine awi" maiden" fmimbagki-fio front, and has a soilare shoulder 204 on the inner side of its head which engages in a. horizontal groove 205 on the back side of the holder. The hole 203 is slot shape, with its long axis vertical, and an eccentrlc 206 is arranged on the clamping bolt partly in the slotted hole, the diameter of the eccentric portion just filling the width of the hole. The eccentric has a flange which bears against the front of the awl holder around the hole. By rotating the eccentric, the clamping bolt is ad usted horizontally toward one side or the other of the machine, carryin the awl and channel cutter with it. The aw channel cutter, clamping bolt and eccentric are secured in adjusted position by screwing up the nut 207 on the front end of the clamping bolt.

The awl holder has a horizontal shoulder 21]. on its back side below the hole or slot 203 for the lower ends of the owl and chan nel cutter to rest on. The upward movement of the awl holder carries the awl through the work. The chisel edge of the channel cutter cuts into the under side of the work at the top of the upward movement of the awl holder, thereby forming a shallow groove between the awl holes on the under side of the work.

The awl holder 21 is mounted to slide horizontally from side to side in a slide box 23, which in turn is slidably arranged for movement up and down in ways 231 on a forwardly projecting portion of the front wall 12 of the machine frame below and to the side of the work table 13. The ways are provided with gibs 234 which can be adjusted to take up wear in the slide box and ways by means of screws 235. The slide box has a horizontal slot in its front side for the awl holder to slide in, and this slot is covered by a removable front plate. The slot has a gib 232 which maybe adjusted by screws 233 to take up wear in the slide 21 and walls of the slot.

The and holder 21 extends through the slide box 23 and has a vertical groove 210. on the inner side of its projecting end. This grooved end of the awl holder slides in front of the end of an oscillating shaft 24, and when the aw] is in alinement with the needle the center of the roove 210 intersects the axis of the oscillating shaft. This oscillating shaft 24 has a sector 240 on its front end with a groove 241 in its front face intersecting the axis of the shaft. This groove 241 stands vertically in one extreme position of oscillation ofthe shaft 24, and it makes an angle of about forty-five degrees with the vertical in its other extreme position. An adjusting arm 25 is pivoted eccentrically'to the front of the sector 240, and may be clamped in angularly adjusted position on said sectorby -the thumb nut 250 and J clamp bolt251 which engages underthe outer cdgeof the sector. The adjusting arm has a slot through it extending crosswise in front of the groove 241 on the sector, and a stud'252 is mounted 'inthe slot in the adjusting arm with its inner end projecting into the sector groove and fitted to slide therein toward or away from the axis of the oscillating shaft 24 when the adjusting arm is angularly adjusted on the sector. The stud has a shoulder against which the inner face of the adjusting arm bears to clamp the stud in the groove. The outer end of the stud 252 has a roller 254 secured on it which engages in the groove 210 in the awl holder. The sector 240 has a scale marked on its outer edge forsetting the adjusting arm 25 to position the stud in the groove 241 at the proper distance from the axis of the oscillating shaft 24 for sliding the awl holder whatever distance is desired for the length of the stitch.

The oscillating shaft 24 is movable axially in its bearings toward the back of the machine to withdraw the sector, stud and roller from the groove 210 in the awl holder. A spring 242 normally holds the shaft and parts carried thereby in. forward position. By pushing the sector 240 back, the awl holder may be freed from the roller 254 and shifted sidewise far enough to carry the awl end away from in front of the shuttle, in order that the bobbin may be conveniently removed and replaced. The oscillating shaft has a. crank 243 on its back end to which one end of a connecting rod 26 is pivi to cause the lever 27 and shaft 24 to oscillate J back and forthat the proper time to feed the work, as hereinafter described.

The slide box 23 is moved up and down by means of a bell crank lever 29 to which it is connected by a link 30. The bell crank lever is pivotally mounted in bearings at the bottom of the machine frame parallel to the cam shaft and at one side of the cam 80. The rear end of the bell crank lever 29 carries a roller 291 which cooperates with a cam groove 31 in the face of the cam to swing the bell crank lever and raise and lower the slide box for the awl holder, and to hold it motionless in either position. The shape of the cam groove 31 is such that the awl is raised to penetrate the work, is held up until the feeding device has-moved the and into vertical alinement with the needle, and is withdrawn in advance of the downward niovementof the needle. That is, first the awl moves up through the work, moves sidewise toward the left to feed the work under the needle, and then withdraws down through the work and moves back toward the right to its initial position out of the way of the needle.

The invention is not restricted to the details of construction shown and described, as it is evident that they are susceptible of modification.

I claim the following as my invention:

1. A sewing machine having a work table, an awl for feeding the work operating in proximity to said table, a sidewise and vertically movable holder for the awl, means for moving said awl holder vertically to cause the awl to penetrate the work, and means for moving said awl holder sidewise in one direction while the awl is in the work and in the opposite direction While the awl is out of the work, said means for sidewise movement comprising a stud adjustably mounted in a radial slot in an oscillating arm and having its end engaging a cross slot in said awl holder, and means for withdrawing said stud from said cross slot to permit said awl holder to be with drawn sidewise from near said table.

2. A sewing machine having a work table, an awl for feeding the work operating in proximity to said table, a sidewise and vertically movable holder for the awl, means for moving said awl holder vertically to cause the awl to penetrate the work, and means for moving said awl holder sidewise in one direction while the awl is in the work and in the opposite direction while the awl is out of the work, said means for sidewise movement comprising a stud adjustably mounted in a radial slot in an oscillating arm and having its end engaging a cross slot in said awl holder, means for adjusting said stud and securing it in adjusted position in said radial slot to adjust the length of the sidewise movement of said awl holder. and means for moving said oscillating arm away from said awl holder to withdraw said stud from said cross slot to permit said awl holder to be withdrawn sidewise from near said table.

3. A sewing machine having an awl, a vertically and laterally movable holder for said awl, means for adjusting said awl laterally in said holder comprising an eccen- Copies of this patent may be obtained for five cent: each,

tric arranged in said holder, a clamping bolt for said awl carried in said eccentric, and means for securing said clamping bolt and awl from angular displacement in said holder.

4. A sewing machine having an awl, a vertically and laterally movable holder for said awl, means for adjusting said awl latorally in said holder comprising an eccentric arranged in a vertical slot in said holder, a clamping bolt for said awl carried in said eccentric, said clamping bolt having a square shoulder engaging in a horizontal groove in said holder for preventing relative angular movement, and means for securing said clamping bolt and awl in said holder.

5. A sewing machine havin an awl and a vertically and sidewise movable awl holder, a channel cutter carried by said awl holder and movable with said awl for cutting a channel in the work, and means for adjusting said awl and channel cutter sidewise in said holder.

6. A sewing machine having an awl and channel cutter, a vertically movable holder having a support for the ends of the awl and channel cutter formed on its face, means for adjusting said awl and channel cutter laterally in said holder comprising an eccentric mounted in a vertical slot in said holder, a clamping bolt for said awl and channel cutter carried in said eccentric having spaced vertical holes adapted to receive the awl and channel, and clamping means for clamping the awl, channel cutter, and eccentric in adjusted position.

7. A sewing machine having a work table and a bobbin holder arranged in proximity thereto, an awl arranged for vertical movement in. front of said bobbin holder, said awl being mounted. in a holder arranged for vertical and sidewise movement, whereby it can be withdrawn from in front of said bobbin holder to give access thereto, said awl holder having a vertical track on one side. and means slidably engaging said track for positioning said holder, said means being removable to permit said holder to be shifted sidewise to withdraw it from in front of said bobbin holder.

Signed at St. Louis, Missouri, this sixteenth day of October, 1916.

HENRY P. SCHOENKY.

by addressing the Commissioner of Patents,

walhlnltol, D. O. 

